Galilean test for the fifth force
Abstract
A direct free-fall experiment has been carried out to measure the differential acceleration between two different materials (copper and uranium) falling in the earth's gravitational field. The differential acceleration was measured to be less than 5 parts in 10 to the 10th of the normal gravitational acceleration. This null result puts new limits on the strength and range of the proposed fifth force.
- Publication:
-
Physical Review Letters
- Pub Date:
- August 1987
- DOI:
- 10.1103/PhysRevLett.59.609
- Bibcode:
- 1987PhRvL..59..609N
- Keywords:
-
- Acceleration (Physics);
- Copper;
- Gravitational Fields;
- Planetary Gravitation;
- Uranium;
- Baryons;
- Light Beams;
- Optical Equipment;
- 04.90.+e;
- 04.80.+z;
- Physics (General);
- Other topics in general relativity and gravitation